Subychheck

I just got my 04 Impreza back from the shop after having the lower control arm rear bushings replaced and noticed a strong burning rubber smell while stopped (after driving for 5-10mins). The smell is very much like the odor from CV boot grease spraying on the exhaust. I've recently had the brake pads and rotors changed. My initial thought was the brakes locking on, checked them all and even reset the caliper pistons. Although the pads are very pretty much touching the rotor there is no difference in heat or moving resistance between the tyres. Problem still persisted. Checked for oil/coolant leaks and couldn't see anything. Ran the car just idling for 10min and vola no smell. This makes me think it's still something to do with the brakes or maybe some grease from the control arm bushings?
A wheel alignment was also conducted but i can't see any signs of tyre rub etc. Any help would be appreciated!